Compressing Configuration Files - Dell S4048–ON Configuration Manual

View Configuration Files
Configuration files have three commented lines at the beginning of the file, as shown in the following example, to help you track the last
time any user made a change to the file, which user made the changes, and when the file was last saved to the startup-configuration.
In the running-configuration file, if there is a difference between the timestamp on the "Last configuration change" and "Startup-config last
updated," you have made changes that have not been saved and are preserved after a system reboot.
Example of the show running-config Command
Dell#show running-config
Current Configuration ...
! Version 9.4(0.0)
! Last configuration change at Tue Mar 11 21:33:56 2014 by admin
! Startup-config last updated at Tue Mar 11 12:11:00 2014 by default
!
<output truncated for brevity>

Compressing Configuration Files

You can optimize and reduce the sizes of the configuration files.
You can compress the running configuration by grouping all the VLANs and the physical interfaces with the same property. Support to
store the operating configuration to the startup config in the compressed mode and to perform an image downgrade without any
configuration loss are provided.
You can create groups of VLANs using the interface group command. This command will create nonexistent VLANs specified in a
range. On successful command execution, the CLI switches to the interface group context. The configuration commands inside the group
context will be the similar to that of the existing range command.
Two existing exec mode CLIs are enhanced to display and store the running configuration in the compressed mode.
show running-config compressed and write memory compressed
The compressed configuration will group all the similar looking configuration thereby reducing the size of the configuration. For this release,
the compression will be done only for interface related configuration (VLAN & physical interfaces)
The following table describes how the standard and the compressed configuration differ:
Table 6. Standard and Compressed Configurations
int vlan 2 int vlan 3
no ip address tagged te 1/1
no shut no ip address
shut
int te 1/1 int te 1/2
no ip address no ip address
switchport shut
shut
Dell# show running-config
int vlan 4 int vlan 5
tagged te 1/1 tagged te 1/1
no ip address no ip address
shut shut
int te 1/3 int te 1/4
no ip address no ip address
shut shut
Dell# show running-config compressed
int vlan 100 int vlan 1000
no ip address ip address 1.1.1.1/16
no shut no shut
int te 1/10 int te 1/34
no ip address ip address 2.1.1.1/16
shut shut
Getting Started 55